mmcb

I put this site together, glad it's useful for you. The graphs are my take on climatographs.

The data is from the National Oceanic and Atmospheric Administration National Climatic Data Center, see http://www.ncdc.noaa.gov/. The dataset has good coverage of the US, but as people have pointed out, there are gaps in many places, such as the UK. The comparison is based on the monthly average max and min temperatures.